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October 21, 2015

Martian mystery: What is odd cell-like structure in Mars meteorite?

Scientists have found a strange structure resembling a microbial cell inside a Martian meteorite, but they're not claiming that it's evidence of Red Planet life.

October 21, 2015

Hubble telescope to hunt for Pluto-bound NASA probe's next target

A NASA spacecraft's historic flyby of Pluto is more than a year away, but researchers are already thinking about where the probe will go next.

October 21, 2015

A planet past Pluto? Astronomers redefine the solar system's edge

Scientists have discovery a distant dwarf planet found well past Pluto -- and its existence suggests there may be another planet out there, a rogue giant ten times bigger than Earth.

October 21, 2015

Smallest, faintest galaxies of the ancient universe spotted

Two of NASA's most powerful space telescopes have teamed up to shed new light on the early history of the universe.

October 21, 2015

Alien planet 11 times bigger than Jupiter found in bizarre, massive orbit

An enormous alien planet — one that is 11 times more massive than Jupiter — was discovered in the most distant orbit yet found around a single parent star.

October 21, 2015

ISON's ghost: 'Comet of the century' likely no longer exists

Sad news, comet fans: ISON is no more. It’s a vaporized husk of its former self. A sublimated dirty snowball. Comet ISON is an ex-comet and this time it’s not playing.

October 21, 2015

Brightest explosion ever seen in the universe

A mysterious blast of light spotted earlier this year near the constellation Leo was actually the brightest gamma-ray burst ever recorded, and was triggered by an extremely powerful stellar explosion, new research reports.

October 21, 2015

Meteor shower from Halley's Comet peaks this weekend

Early Sunday (May 5), just before dawn, we'll have an opportunity to see some of the remnants of the most famous of comets briefly light up the early morning sky.

October 21, 2015

Key telescopes threatened by looming budget cuts

With fiscal cliffs, debt ceilings and other financial woes facing the country, several iconic telescopes may lose funding and possibly even close.

October 21, 2015

Ursid meteor shower peaks Saturday

The December Ursid meteor display peaks during the morning hours of Saturday, Dec. 23.